Tunnel emergency alarm system
The emergency notification system integrates signal and internal wiring by connecting switch terminals to terminal blocks in series, enabling comprehensive monitoring and early fault detection, addressing the issue of undetected internal wiring disconnections in tunnel disaster prevention systems.
JP2026116546APending Publication Date: 2026-07-09NOHMI BOSAI LTD
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Patent Information
- Application Number
- JP2026078715
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2020-11-30
- Filing Date
- 2026-05-08
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Existing tunnel disaster prevention systems fail to monitor disconnections in the internal wiring from terminal blocks to manual notification devices, despite multiple connections leading from signal wiring, which can lead to undetected failures.
Method used
The emergency notification system connects two wires from each switch terminal to two terminals of a terminal block and integrates internal wiring with signal wiring in series, allowing for monitoring of both signal and internal wiring connections.
Benefits of technology
Enables comprehensive monitoring of signal and internal wiring connections, detecting disconnections and early signs of failures, reducing the risk of undetected faults and improving system reliability.
✦ Generated by Eureka AI based on patent content.
Abstract
In emergency transmission equipment that detects disconnections in signal wiring to manual notification devices, multiple connecting wires are derived from the middle of the signal wiring and connected to the transmitter (manual notification device), and the wiring from the connecting wires to the manual notification device is not monitored. [Solution] The emergency notification transmission equipment comprises a switch that is pressed in an emergency and a terminal block having multiple connection terminals. Two wires are led out from one switch terminal of the switch and connected to two connection terminals of the terminal block, and two other wires are led out from the other switch terminal and connected to the other two connection terminals of the terminal block.
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